Chemical Kinetics and Nuclear Chemistry

For a chemical reaction $$\mathrm{A}+\mathrm{B} \rightarrow$$ Product, the order is 1 with respect to $$\mathrm{A}$$ and $$\mathrm{B}$$. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} $$\mathrm{Rate}$$ $$\mathrm{mol~L^{-1}~S^{-1}}$$ $$\mathrm{[A]}$$ $$\mathrm{mol~L^{-1}}$$ $$\mathrm{[B]}$$ $$\mathrm{mol~L^{-1}}$$ 0.10 20 0.5 0.40 $$x$$ 0.5 0.80 40 $$y$$ What is the value of $$x$$ and $$y$$ ?